Light heavyweights square off Friday night in the main event of UFC on ESPN 6 as fourth-ranked contender Dominick Reyes takes on former middleweight champion Chris Weidman. The main UFC on ESPN 6 card is set for 9 p.m. ET. Reyes is a -155 favorite (risk $155 to win $100), while Weidman is priced at +135 (risk $100 to win $135) in the latest Reyes vs. Weidman odds. 

Before you make any UFC on ESPN 6 picks, you need to see the predictions from SportsLine MMA expert Kyle Marley. He won the first-ever "ToutMaster" UFC betting contest sponsored by MMAOddsBreaker and is in contention to win this year's contest. He also appears regularly on multiple MMA betting and DFS shows. Over the past year, $100 bettors who have followed Marley's picks are up nearly $20,000! 

Just last week at UFC Fight Night 161, Marley predicted that Niko Price (-155) would defeat James Vick (+135) by knockout in a middleweight bout, and Price proved him correct with a first-round finish. Two weeks ago at UFC 243, Marley told SportsLine members that Israel Adesanya (-115) would defeat Robert Whittaker (-105) in their middleweight unification bout. Adesanya's spectacular knockout gave Marley's backers another win. Anyone who has followed Marley is WAY UP.

We'll reveal one of Marley's UFC on ESPN 6 picks here: He is backing Maycee Barber (-120) to defeat Gillian Robertson (+100) in a women's flyweight clash on the main card.

"Barber will be too strong for Robertson to get takedowns consistently, and she is going to be much better than Robertson in the striking department," Marley told SportsLine.

Marley also has extremely confident picks locked in for Reyes vs. Weidman and every other bout on the UFC on ESPN 6 card. You ABSOLUTELY need to see his picks before making any of your own!

Who wins Reyes vs. Weidman and every bout at UFC on ESPN 6? And how exactly does each fight end? ... Join SportsLine right now to see which fighters you need to be all over Friday at UFC on ESPN 6, all from the incomparable expert who's up nearly $20,000 in MMA picks in the last year!